CN106826117B - A kind of processing method of precision bearing seat - Google Patents
A kind of processing method of precision bearing seat Download PDFInfo
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- CN106826117B CN106826117B CN201710056972.6A CN201710056972A CN106826117B CN 106826117 B CN106826117 B CN 106826117B CN 201710056972 A CN201710056972 A CN 201710056972A CN 106826117 B CN106826117 B CN 106826117B
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- workpiece
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- outer circle
- forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
Abstract
A kind of processing method of precision bearing seat of the present invention, step：Stock：Blank is precision die forgings；It is rough turn：With the tight forging of the hard claw clip of scroll chuck on centre numerically controlled lathe, the outer circle and circle end face of rough turn forging turn around forging tight with the hard claw clip of scroll chuck, rough turn another circle end face and outer circle, and the inner hole of heavy boring forging and interior hole end surface；Heat treatment：Workpiece after rough turn is made annealing treatment；Smart car：Workpiece after being tightly heat-treated on precise NC lathe with the hard claw clip of scroll chuck, outer circle, grooving and the circle end face of smart car workpiece；It is tight with the soft claw clip of scroll chuck again, another circle end face of smart car, and right boring inner hole and interior hole end surface；Cold treatment：Cold treatment is carried out to the workpiece after smart car；Fine grinding：Using the workpiece after bearing block precision grinding jig clamped one time cold treatment, inner hole, outer circle and the grinding of end face of workpiece are completed on accurate omnipotent numerically control grinder, completes the processing of bearing block.Using the method, machining accuracy is high, high production efficiency.
Description
Technical field
The present invention relates to the technical field of machining, especially a kind of processing method of precision bearing seat.
Background technique
There is a kind of " Fast frequency spindle " in digit ctrol machine tool field sometimes referred to as " direct-drive main shaft " to be referred to as
Electro spindle, it is the new technology that machine tool chief axis and spindle motor combine together and built-in electric motor main axle unit, it is machine
The length of bed main drive chain shorten to zero, realizes " Zero-drive Chain " of lathe, with compact-sized, mechanical efficiency is high, revolution is fast
The advantages that spending that high, rotating accuracy is high, noise is low and be with small vibration, thus obtain in Modern NC Machine Tool more and more extensive
Application.
Bearing block is that a very crucial precision component, buried bearing and main shaft, the accuracy of manufacture are direct in electro spindle
Influence the service life of electro spindle, bearing block dimension precision requirement is high, the dimensional accuracy of inner hole generally require 0.005mm with
Interior, Geometrical Tolerance Principle is also high, and the cylindricity of inner hole generally requires within 0.002mm, the concentricity and end of inner hole and outer circle
Face bounce is general to be required within 0.002mm, and the finishing of bearing block generally uses accurate digital control grinding machine of universal to be ground inside and outside circle
And its end face, due to the special construction of bearing block, inner hole and cylindricalo grinding generally require clamping in two times, before second of clamping
It is tuned up on the basis of the face being ground in face, the time is long and can generate cumulative measurement error, and production efficiency is low, and quality cannot protect
Card.In addition, bearing block easily deforms in use, cause electro spindle precision unstable, service life is shorter.
Summary of the invention
The technical problem to be solved by the present invention is to：A kind of high, high production efficiency the precision bearing seat of machining accuracy is provided
Processing method.
The technical solution adopted by the present invention to solve the technical problems is：A kind of processing method of precision bearing seat, including
Following steps：
Step 1) stock：Blank is the forging that precision die forging is made；
Step 2) is rough turn：With the tight forging of the hard claw clip of scroll chuck on centre numerically controlled lathe, the outer circle of rough turn forging and outer
Nose circle face, then forging is turned around, another circle end face and outer circle of rough turn forging tight with the hard claw clip of scroll chuck, and heavy boring forging
Inner hole and interior hole end surface；
Step 3) heat treatment：Workpiece after rough turn is made annealing treatment；
Step 4) smart car：Workpiece after being tightly heat-treated on precise NC lathe with the hard claw clip of scroll chuck, smart car workpiece
Outer circle, grooving and circle end face；It is tight with the soft claw clip of scroll chuck again, another circle end face of smart car workpiece, and right boring inner hole
And interior hole end surface；
Step 5) cold treatment：Cold treatment is carried out to the workpiece after smart car；
Step 6) fine grinding：Using the workpiece after bearing block precision grinding jig clamped one time cold treatment, in accurate omnipotent numerical control
Inner hole, outer circle and the grinding of end face that workpiece is completed on grinding machine, complete the processing of bearing block.
Further, in step 2 as described in the above technical scheme, the outer circle of workpiece stays 2~3mm allowance for finish, work
The circle end face of part stays 1~2mm allowance for finish.
Further, in step 4 as described in the above technical scheme, the outer circle of workpiece stays 0.2~0.4mm to refine surplus,
The circle end face of workpiece stays 0.05~0.1mm to refine surplus.
Further, in step 6 as described in the above technical scheme, bearing block precision grinding jig has clamped one time ten thousand
Clamp body on energy numerically-controlled precise grinding machine scroll chuck, the positioning hole of clamp body are equipped with mandrel, mandrel by the first screw
Outer circle be cased with the ringfeder for positioning and clamping workpiece, positioning sleeve is equipped with by the second screw between clamp body and workpiece,
It is equipped on positioning sleeve by holding screw and the inner hole of workpiece and interior hole end surface is refined convenient for omnipotent numerically-controlled precise grinding machine
Hook pressure plate；The fixture, which also has, to be mounted in inner hole of workpiece and convenient for omnipotent numerically-controlled precise grinding machine to work by third screw
The washer that the outer circle and circle end face of part are refined.
Further, the gap between ringfeder and workpiece as described in the above technical scheme is 0.02~0.03mm.
Further, the application method of bearing block precision grinding jig as described in the above technical scheme, tightens first first
Screw, mandrel are moved axially along the location hole of clamp body, drive ringfeder to move axially along the location hole of clamp body, the outer circle of ringfeder
It becomes larger, realizes the positioning and clamping of ringfeder and workpiece；Then third screw is tightened, realizes washer and third screw to workpiece
Further clamping；Accurate omnipotent numerically control grinder is recycled to refine the outer circle and circle end face of workpiece；Further tighten
Holding screw realizes the positioning and clamping of positioning sleeve, hook pressure plate and holding screw to workpiece, and unclamps third screw, removes
Washer；Accurate omnipotent numerically control grinder is recycled to refine the inner hole of workpiece and interior hole end surface.
The beneficial effects of the invention are as follows：The present invention uses precise grinding process and cold treatment method, especially with bearing
The accurate grinding jig of seat realizes that clamped one time completes the inside and outside circle of part and the accurate grinding of end face, meets the system of precision bearing seat
Manufacturing accuracy requires and stability in use requires the highly-efficient processing, it can be achieved that precision component, improves production efficiency, production is greatly lowered
The scrappage of product；Due to using cold treatment, good stability of the dimension, part is not easy to deform in use, can significantly mention
The service life of high part.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to do simply to introduce.
Fig. 1 is the structural schematic diagram of bearing block；
Fig. 2 is the structural schematic diagram of fixture；
Fig. 3 is the structural schematic diagram of ringfeder；
Fig. 4 is the structural schematic diagram of the transition ring with positioning pin；
Fig. 5 is structural schematic diagram when refining bearing block outer circle and circle end face；
Fig. 6 is structural schematic diagram when refining inner hole of bearing seat and interior hole end surface.
In figure marked as：1, clamp body；2, the first screw；3, mandrel；4, ringfeder；5, positioning pin；6, positioning sleeve；7,
Three screws；8, holding screw；9, hook pressure plate；10, washer；11, positioning pin；12, transition ring.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
A kind of processing method of precision bearing seat, includes the following steps：
Step 1) stock：Blank is the forging that precision die forging is made；
Step 2) is rough turn：With the tight forging of the hard claw clip of scroll chuck on centre numerically controlled lathe, the outer circle of rough turn forging and outer
Nose circle face, then forging is turned around, another circle end face and outer circle of rough turn forging tight with the hard claw clip of scroll chuck, and heavy boring forging
Inner hole and interior hole end surface；The outer circle of workpiece stays 2~3mm allowance for finish, and the circle end face of workpiece stays more than 1~2mm finishing
Amount；
Step 3) heat treatment：Workpiece after rough turn is made annealing treatment；
Step 4) smart car：Workpiece after being tightly heat-treated on precise NC lathe with the hard claw clip of scroll chuck, smart car workpiece
Outer circle, grooving and circle end face；It is tight with the soft claw clip of scroll chuck again, another circle end face of smart car workpiece, and right boring inner hole
And interior hole end surface；The outer circle of workpiece stays 0.2~0.4mm to refine surplus, and the circle end face of workpiece stays more than 0.05~0.1mm fine grinding
Amount；
Step 5) cold treatment：Cold treatment is carried out to the workpiece after smart car；
Step 6) fine grinding：Using the workpiece after bearing block precision grinding jig clamped one time cold treatment, in accurate omnipotent numerical control
The processing of bearing block, high production efficiency, geometric tolerance essence are completed in inner hole, outer circle and the grinding of end face that workpiece is completed on grinding machine
Degree can control within 0.001mm.
See Fig. 1~6, bearing block has the seal groove being pre-machined in the outer circle of rear end, and the rear end of bearing block is also
With inside flange collar, bearing block grinding jig has clamp body 1 of the clamped one time on omnipotent numerically-controlled precise grinding machine scroll chuck,
The positioning hole of 1 front center of clamp body is equipped with mandrel 3, and the positioning hole in the middle part of 3 rear end of mandrel is equipped with the first screw 2,
The threaded portion of first screw 2 is threadedly coupled with the threaded hole in the middle part of 1 rear end of clamp body, i.e., the positioning hole of clamp body 1 passes through the
One screw 2 is equipped with mandrel 3.The outer circle of mandrel 3 is cased with the ringfeder 4 for positioning and clamping workpiece, the outer wall and workpiece of ringfeder 4
On flange collar inner wall be in contact.Positioning is equipped with by the second screw between the front end boss of clamp body 1 and the rear end face of workpiece
Set 6, the inner wall of 6 middle part location hole of positioning sleeve is in contact with the outer wall of ringfeder 4；It is equipped with just on positioning sleeve 6 by holding screw 8
In the hook pressure plate 9 that omnipotent numerically-controlled precise grinding machine refines the inner hole of workpiece and interior hole end surface, the preceding end hook of hook pressure plate 9
The firmly seal groove of workpiece；The fixture also has a washer 10 being mounted in inner hole of workpiece, the rear end face of washer 10 and workpiece it is convex
Circle front end face is in contact, and the middle part positioning hole of washer 10 is equipped with third screw 7, before the threaded portion of third screw 7 and mandrel 3
The threaded hole at end middle part is threadedly coupled, i.e., is equipped in the inner hole of workpiece by third screw 7 convenient for omnipotent numerically-controlled precise grinding machine
The washer 10 that outer circle and circle end face to workpiece are refined.Gap between ringfeder 4 and workpiece is 0.02~0.03mm.
Ringfeder 4 is the revolution cover parts of interior pore area Double-conical-surface, and outer surface offers several equal parts, staggered obstructed narrow
Slot, positioning of the ringfeder 4 for cover parts clamp, and both ends of the surface offer the location hole of several equal parts, make convenient for ringfeder 4
With energy timely reconditioning when deforming in the process, guarantee the positioning accuracy of fixture.Mandrel 3 is revolution of the Double-conical-surface with guide function
Axial workpiece, ringfeder 4 and mandrel 3 are linked together by latch, and preventing fixture, ringfeder 4 rotates when in use, and leads
Cause fixture mating surface part plucking, the final precision for influencing fixture.Clamp body 1 is the revolution axial workpiece with location hole, is used for
The axially position of mandrel 3.Hook pressure plate 9 is sector.Positioning sleeve 6 is revolution cover parts, axis when for cover parts grinding
To positioning.
The application method of the precision grinding jig, tightens the first screw 2 first, and mandrel 3 is axially moved along the location hole of clamp body 1
It is dynamic, drive ringfeder 4 to move axially along the location hole of clamp body 1, the outer circle of ringfeder 4 becomes larger, in the outer wall and workpiece of ringfeder 4
Contact between the rear inner wall of portion's location hole is even closer, realizes the positioning and clamping of ringfeder 4 and workpiece；Then third is tightened
Rear end face contact in the middle part of workpiece between the inner hole side wall of location hole front end of screw 7, washer 10 is even closer, realizes washer
10 and further clamping of the third screw 7 to workpiece；Recycle accurate omnipotent numerically control grinder to the outer circle and circle end face of workpiece
It is refined；Holding screw 8 is further tightened, realizes the clamping of positioning sleeve 6, hook pressure plate 9 and holding screw 8 to workpiece, and
Third screw 7 is unclamped, washer 10 is removed；Accurate omnipotent numerically control grinder is recycled to carry out essence to the inner hole of workpiece and interior hole end surface
Mill.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (5)
1. a kind of processing method of precision bearing seat, it is characterised in that：Include the following steps：
Step 1) stock：Blank is the forging that precision die forging is made；
Step 2) is rough turn：With the tight forging of the hard claw clip of scroll chuck, the outer circle of rough turn forging and outer nose circle on centre numerically controlled lathe
Face, then forging is turned around, another circle end face and outer circle of rough turn forging tight with the hard claw clip of scroll chuck, and heavy boring forging is interior
Hole and interior hole end surface；
Step 3) heat treatment：Workpiece after rough turn is made annealing treatment；
Step 4) smart car：Workpiece after being tightly heat-treated on precise NC lathe with the hard claw clip of scroll chuck, smart car workpiece it is outer
Circle, grooving and circle end face；It is tight with the soft claw clip of scroll chuck again, another circle end face of smart car workpiece, and right boring inner hole and interior
Hole end surface；
Step 5) cold treatment：Cold treatment is carried out to the workpiece after smart car；
Step 6) fine grinding：Using the workpiece after bearing block precision grinding jig clamped one time cold treatment, in accurate omnipotent numerically control grinder
Upper inner hole, outer circle and the grinding of end face for completing workpiece, completes the processing of bearing block；Wherein, bearing block precision grinding jig has
The positioning hole of clamp body (1) of the clamped one time on omnipotent numerically-controlled precise grinding machine scroll chuck, clamp body (1) passes through the first spiral shell
Nail (2) is equipped with mandrel (3), and the outer circle of mandrel (3) is cased with the ringfeder (4) for positioning and clamping workpiece, clamp body (1) and work
It is equipped with positioning sleeve (6) between part by the second screw, is equipped on positioning sleeve (6) by holding screw (8) convenient for omnipotent number
The hook pressure plate (9) that control precision grinder refines the inner hole of workpiece and interior hole end surface；The fixture also has through third spiral shell
The pad that nail (7) is mounted in inner hole of workpiece and is refined convenient for omnipotent numerically-controlled precise grinding machine to the outer circle and circle end face of workpiece
It encloses (10).
2. a kind of processing method of precision bearing seat according to claim 1, it is characterised in that：In the step 2, work
The outer circle of part stays 2~3mm allowance for finish, and the circle end face of workpiece stays 1~2mm allowance for finish.
3. a kind of processing method of precision bearing seat according to claim 1, it is characterised in that：In the step 4, work
The outer circle of part stays 0.2~0.4mm to refine surplus, and the circle end face of workpiece stays 0.05~0.1mm to refine surplus.
4. a kind of processing method of precision bearing seat according to claim 1, it is characterised in that：The ringfeder (4) with
Gap between workpiece is 0.02~0.03mm.
5. a kind of processing method of precision bearing seat according to claim 1, it is characterised in that：The bearing block is accurate
The application method of grinding jig is tightened the first screw (2) first, and mandrel (3) is moved axially along the location hole of clamp body (1), is driven
Ringfeder (4) is moved axially along the location hole of clamp body (1), and the outer circle of ringfeder (4) becomes larger, and realizes ringfeder (4) and workpiece
Positioning and clamping；Then it tightens third screw (7), realizes the further clamping of washer (10) and third screw (7) to workpiece；Again
The outer circle and circle end face of workpiece are refined using accurate omnipotent numerically control grinder；It further tightens holding screw (8), realizes
The positioning and clamping of positioning sleeve (6), hook pressure plate (9) and holding screw (8) to workpiece, and third screw (7) are unclamped, remove pad
It encloses (10)；Accurate omnipotent numerically control grinder is recycled to refine the inner hole of workpiece and interior hole end surface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710056972.6A CN106826117B (en) | 2017-01-22 | 2017-01-22 | A kind of processing method of precision bearing seat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710056972.6A CN106826117B (en) | 2017-01-22 | 2017-01-22 | A kind of processing method of precision bearing seat |
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| CN106826117A CN106826117A (en) | 2017-06-13 |
| CN106826117B true CN106826117B (en) | 2018-11-16 |
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| CN108772737B (en) * | 2018-06-04 | 2023-12-05 | 成都久和建设设备有限责任公司 | Bearing seat turning process and fixture thereof |
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| CN108747227B (en) * | 2018-07-19 | 2024-04-02 | 广州市敏嘉制造技术有限公司 | Machining production line for bearing of air conditioner compressor |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4506129B2 (en) * | 2002-11-07 | 2010-07-21 | 日本精工株式会社 | Rolling bearing bearing ring manufacturing method Rolling bearing bearing ring manufacturing apparatus Rolling bearing |
| CN100532008C (en) * | 2007-05-18 | 2009-08-26 | 瓦房店光阳轴承集团有限公司 | Method for processing mechanical diaphragm pump crank bearing bushing |
| CN102672431B (en) * | 2012-05-18 | 2014-08-20 | 浙江博盟精工机械有限公司 | Production process of shaft coupler bearing |
| CN103522180A (en) * | 2013-05-31 | 2014-01-22 | 洛阳嘉维轴承制造有限公司 | Clamp special for accurate grinding of taper hole of spindle |
| CN105750850A (en) * | 2014-12-13 | 2016-07-13 | 重庆环德科技有限公司 | Turntable bearing machining technique |
| CN104526284A (en) * | 2014-12-19 | 2015-04-22 | 常熟市常轴轴承有限公司 | Thin-walled bearing ring lathing process |
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